<!DOCTYPE html>

<html>

<head>

<meta charset="utf-8" />
<meta name="generator" content="pandoc" />
<meta http-equiv="X-UA-Compatible" content="IE=EDGE" />

<meta name="viewport" content="width=device-width, initial-scale=1" />



<title>Using Python with renv</title>

<script>// Pandoc 2.9 adds attributes on both header and div. We remove the former (to
// be compatible with the behavior of Pandoc < 2.8).
document.addEventListener('DOMContentLoaded', function(e) {
  var hs = document.querySelectorAll("div.section[class*='level'] > :first-child");
  var i, h, a;
  for (i = 0; i < hs.length; i++) {
    h = hs[i];
    if (!/^h[1-6]$/i.test(h.tagName)) continue;  // it should be a header h1-h6
    a = h.attributes;
    while (a.length > 0) h.removeAttribute(a[0].name);
  }
});
</script>

<style type="text/css">
  code{white-space: pre-wrap;}
  span.smallcaps{font-variant: small-caps;}
  span.underline{text-decoration: underline;}
  div.column{display: inline-block; vertical-align: top; width: 50%;}
  div.hanging-indent{margin-left: 1.5em; text-indent: -1.5em;}
  ul.task-list{list-style: none;}
    </style>






<style type="text/css">body {
background-color: #fff;
margin: 1em auto;
max-width: 700px;
overflow: visible;
padding-left: 2em;
padding-right: 2em;
font-family: "Open Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
font-size: 14px;
line-height: 1.35;
}
#TOC {
clear: both;
margin: 0 0 10px 10px;
padding: 4px;
width: 400px;
border: 1px solid #CCCCCC;
border-radius: 5px;
background-color: #f6f6f6;
font-size: 13px;
line-height: 1.3;
}
#TOC .toctitle {
font-weight: bold;
font-size: 15px;
margin-left: 5px;
}
#TOC ul {
padding-left: 40px;
margin-left: -1.5em;
margin-top: 5px;
margin-bottom: 5px;
}
#TOC ul ul {
margin-left: -2em;
}
#TOC li {
line-height: 16px;
}
table {
margin: 1em auto;
border-width: 1px;
border-color: #DDDDDD;
border-style: outset;
border-collapse: collapse;
}
table th {
border-width: 2px;
padding: 5px;
border-style: inset;
}
table td {
border-width: 1px;
border-style: inset;
line-height: 18px;
padding: 5px 5px;
}
table, table th, table td {
border-left-style: none;
border-right-style: none;
}
table thead, table tr.even {
background-color: #f7f7f7;
}
p {
margin: 0.5em 0;
}
blockquote {
background-color: #f6f6f6;
padding: 0.25em 0.75em;
}
hr {
border-style: solid;
border: none;
border-top: 1px solid #777;
margin: 28px 0;
}
dl {
margin-left: 0;
}
dl dd {
margin-bottom: 13px;
margin-left: 13px;
}
dl dt {
font-weight: bold;
}
ul {
margin-top: 0;
}
ul li {
list-style: circle outside;
}
ul ul {
margin-bottom: 0;
}
pre, code {
background-color: #f7f7f7;
border-radius: 3px;
color: #333;
white-space: pre-wrap; 
}
pre {
border-radius: 3px;
margin: 5px 0px 10px 0px;
padding: 10px;
}
pre:not([class]) {
background-color: #f7f7f7;
}
code {
font-family: Consolas, Monaco, 'Courier New', monospace;
font-size: 85%;
}
p > code, li > code {
padding: 2px 0px;
}
div.figure {
text-align: center;
}
img {
background-color: #FFFFFF;
padding: 2px;
border: 1px solid #DDDDDD;
border-radius: 3px;
border: 1px solid #CCCCCC;
margin: 0 5px;
}
h1 {
margin-top: 0;
font-size: 35px;
line-height: 40px;
}
h2 {
border-bottom: 4px solid #f7f7f7;
padding-top: 10px;
padding-bottom: 2px;
font-size: 145%;
}
h3 {
border-bottom: 2px solid #f7f7f7;
padding-top: 10px;
font-size: 120%;
}
h4 {
border-bottom: 1px solid #f7f7f7;
margin-left: 8px;
font-size: 105%;
}
h5, h6 {
border-bottom: 1px solid #ccc;
font-size: 105%;
}
a {
color: #0033dd;
text-decoration: none;
}
a:hover {
color: #6666ff; }
a:visited {
color: #800080; }
a:visited:hover {
color: #BB00BB; }
a[href^="http:"] {
text-decoration: underline; }
a[href^="https:"] {
text-decoration: underline; }

code > span.kw { color: #555; font-weight: bold; } 
code > span.dt { color: #902000; } 
code > span.dv { color: #40a070; } 
code > span.bn { color: #d14; } 
code > span.fl { color: #d14; } 
code > span.ch { color: #d14; } 
code > span.st { color: #d14; } 
code > span.co { color: #888888; font-style: italic; } 
code > span.ot { color: #007020; } 
code > span.al { color: #ff0000; font-weight: bold; } 
code > span.fu { color: #900; font-weight: bold; } 
code > span.er { color: #a61717; background-color: #e3d2d2; } 
</style>




</head>

<body>




<h1 class="title toc-ignore">Using Python with renv</h1>



<p>If you’re using <code>renv</code> with an R project that also depends
on some Python packages (say, through the <a href="https://rstudio.github.io/reticulate/">reticulate</a> package),
then you may find <code>renv</code>’s Python integration useful.</p>
<div id="activating-python-integration" class="section level2">
<h2>Activating Python Integration</h2>
<p>Python integration can be activated on a project-by-project basis.
Use <code>renv::use_python()</code> to tell <code>renv</code> to create
and use a project-local Python environment with your project. If the
<code>reticulate</code> package is installed and active, then
<code>renv</code> will use the same version of Python that
<code>reticulate</code> normally would when generating the virtual
environment. Alternatively, you can set the
<code>RETICULATE_PYTHON</code> environment variable to instruct
<code>renv</code> to use a different version of Python.</p>
<p>If you’d rather tell <code>renv</code> to use an existing Python
virtual environment, you can do so by passing the path of that virtual
environment instead – use
<code>renv::use_python(python = &quot;/path/to/python&quot;)</code> and
<code>renv</code> will record and use that Python interpreter with your
project. This can also be used with pre-existing virtual environments
and Conda environments.</p>
</div>
<div id="understanding-python-integration" class="section level2">
<h2>Understanding Python Integration</h2>
<p>Once Python integration is active, <code>renv</code> will attempt to
manage the state of your Python virtual environment when
<code>snapshot()</code> / <code>restore()</code> is called. With this,
projects that use <code>renv</code> and Python can ensure that Python
dependencies are tracked in addition to R package dependencies. Note
that future restores will require both <code>renv.lock</code> (for R
package dependencies) and <code>requirements.txt</code> (for Python
package dependencies).</p>
<div id="virtual-environments" class="section level3">
<h3>Virtual Environments</h3>
<p>When using virtual environments, the following extensions are
provided:</p>
<ul>
<li><p><code>renv::snapshot()</code> calls
<code>pip freeze &gt; requirements.txt</code> to save the set of
installed Python packages;</p></li>
<li><p><code>renv::restore()</code> calls
<code>pip install -r requirements.txt</code> to install the
previously-recorded set of Python packages.</p></li>
</ul>
</div>
<div id="conda-environments" class="section level3">
<h3>Conda Environments</h3>
<p>When using Conda environments, the following extensions are
provided:</p>
<ul>
<li><p><code>renv::snapshot()</code> calls
<code>conda env export &gt; environment.yml</code> to save the set of
installed Python packages;</p></li>
<li><p><code>renv::restore()</code> calls
<code>conda env [create/update] --file environment.yml</code> to install
the previously-recorded set of Python packages.</p></li>
</ul>
</div>
</div>



<!-- code folding -->


<!-- dynamically load mathjax for compatibility with self-contained -->
<script>
  (function () {
    var script = document.createElement("script");
    script.type = "text/javascript";
    script.src  = "https://mathjax.rstudio.com/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML";
    document.getElementsByTagName("head")[0].appendChild(script);
  })();
</script>

</body>
</html>
